Boiler blow down controller

Details Boiler blow down controller Boiler blow down controller

1976-04-23

1978-01-31

Sprague, Kenneth W.

Liquid heaters and vaporizers

Cleaning

Blow off

1225042, 340227D, F22B 3754, F22B 3742

Patent

active

040709922

ABSTRACT:
A combined timer, blow down warning device, chemical pump, and controller for boilers. The circuit comprises an electro-mechanical array of relays, flashing lights and alarms and an electronic tripper which operates from the rate of change in temperature in the blow down tailpipe, to turn off the lights and alarms only after a manual blow down operation has been performed.

REFERENCES:
patent: 1606915 (1926-11-01), Badger
patent: 1971816 (1934-08-01), Hecht et al.
patent: 3044049 (1962-07-01), Everett et al.
patent: 3071713 (1963-01-01), Duncan
patent: 3117311 (1964-01-01), Lemaire
patent: 3377994 (1968-04-01), Horne
patent: 3680531 (1972-08-01), Holdt
patent: 3780261 (1973-12-01), Eaton-Williams
patent: 3861624 (1975-01-01), Lear
patent: 3999079 (1976-12-01), Chikuma

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